Bag filling machine



Sept. 13, 1938. H. s. GAY

BAG FILLING MACHINE Filed May- 18, 1957 ulll E. mfll liv Patented Sept.13, 1938 H 3 UNITED STATES PATENT OFFICE 2,130,005

BAG FILLING 'MAGHINE Harry S. Gay, Mount Gay, W. Va. Application May 18,1937, Serial No. 143,356 2' Claims. (o1; 22c-5s)- This invention relatesto improvements in bag nism is mounted. The foregoing constructionfilling machines, and its objects are as follow: of the base I is notnecessarily adhered to in First, to provide a machineespecially adaptedpractice because it is obvious that its purpose of to filling tampbagswith screened clay, these supporting the mechanism can'be served just as5 bags being used to force home charges of blasting well by a structurewhich varies from that shown. 5 powder in holes drilled in coal veinsand the A clay hopper 5 is supported upon the table 4 like. by aplurality of upright braces 6 which are Second, to provide a bag fillingmachine for secured at their ends to the hopper and to the the foregoingpurpose which has as one of its table. The hopper is made from a blank5a, sub- 10 main features that construction whereby the stantially ofthe shape in Fig. 5, and when medi- 10 auger, auger tubeand nozzle areeasily separated ally. bent tapers downwardly to a curved or tubufromthe rest of the machine and replaced. lar terminal 7. A fiange St on theblank is formed Third, to improve the end of the nozzle so into thespout or extension 8 (Fig. 2), which is that a bag can be slipped onmore easily and long enough to extend beyond the front limit of quicklythan otherwise. the hopper and bridge the gap between the hopper 15Fourth, to provide a novel belt tensioning arand nozzle and prevent theloss of the material rangement wherein the weight of the motor is II.The hopper is completed by end pieces I2 employed to stretch the belt,the belt also actwhich are fitted in and secured in any customary ing asa friction release in the event of a piece manner.

of iron orother solid matter getting into the The spout 8 is introducedinto the top of a 20 auger. support I3 onto which it is clamped by a capI4.

Fifth, to provide a machine having the fore- A similar support I311.extends up to where it is going characteristics, which is readilyadaptable welded at I32) to the adjacent hopper end I2. A to fillingbags with materials other than screened ball bearing I6 fits in aretainer I60, on the supclay for purposes other than tamping blastingport I3a, a bearing retainer plate Ifib holding the 25 powder charges.ball bearing in place because of the two screws Other objects andadvantages will appear in I80 which are driven through. The ball bearingthe following specification, reference being had I6 supports the innerend of a shaft II, the outer to the accompanying drawing, in which: endof which is supported by a ball bearing He Figure 1 is a perspectiveview of the improved carried by a support Ill). 30 machine, bothillustrating its use and diagram- The combined bore in the support I 3and cap matically showing the current control. I4 is internally threadedat I8 so that a nozzle Figure 2 is a fractional longitudinal section of1 I9 can be screwed in when the assemblage is the machine. I made. Atightening of the nuts that hold the cap Figure 3 is a detail sectionalview which is a I4 down will then clamp upon the threads so 35continuation of Fig.2 at the line d-b. that there is little possibilityof the nozzle I9 Figure 4 is a detail perspective View of theforbecoming loose. A loosening of the nuts enables ward end of thenozzle. unscrewing of the nozzle for any desired purpose. Figure 5 is adetail View of the hopper blank. The forward extremity of the nozzle I9which,

As already indicated in one of the statements as seen in the drawing, isa tube, is turned down 40 of the objects of the invention, the primarypurat 20 (Fig. 3) so as to be thinned at the end, and

pose of the instant machine is to enable the is then split at 2I at anumber of places so as to quick and easy filling of bags with clay,which is render the thinned end flexible. The purpose of usuallyscreened, so as to form plugs with which the foregoing thinning is totaper the open end to tamp charges of blasting powder in drilled of thenozzle and enable the slipping of the tamp 45 holes. These bags areusually about 15 inches bag 22 into place more quickly and easily thanlong, and when filled, as stated, are either would otherwise bepossible. One of the bags is dropped or forced into the hole so as todrive the shown in position in Fig. 1, another being held charge ofblasting powder home. in the hand of the operator in readiness for em-In carrying out the invention provision is'made placement when the firstbag is filled by the oper- 50 of a base generally designated I. Thiscomprises ation of the machine. four legs 2 which are made of sectionsof pipe Filling is accomplished by an auger 23, which which are screwedinto floor flanges 3 at one end, operates in the curved terminal I andnozzle I9. the other ends being appropriately secured to a The forwardend of the auger stops immediately 5 table 4 upon which all of theremaining mechabehind the splits 2I (Fig. 3) thereby avoiding .from anyconvenient source.

any restriction of the desired flexibility of the end 20. The shaft 24of the auger is squared or may be otherwise non-circular at 25. This endfits into the correspondingly shaped socket 26 in the inner end of thepreviously mentioned shaft H, the fit being loose because the claypacked around the auger holds it in place. The latter has a large drivenpulley 21 keyed to it.

A V-belt 29 extends from the driven pulley 21 to a drive pulley 30 onthe shaft 3| of a motor 32. This motor is suspended beneath the table 4by a pair of bolts 33 (only one bolt of the pair being shown) whichsecure the motor only on the side farthest from the drive pulley 30.This arrangement enables the motor to take the sagged positionillustrated, the weight of the motor being relied upon to maintain thetension in the belt 29 because of the weight that is imposed thereon atthe pulley 30. At the same time the belt 29 acts as a friction release,enabling slipping of the belt in the event of the possibility of iron orother solid matter getting into the auger and obstructing its rotation.

The motor 32 is operated by electrical current The wires 34 areconnected between the motor and said source. A switch 35 is convenientlyoperated by the foot lever 36 and in practice this lever, which is inthe nature of a treadle will be placed on the floor within reach of theoperators foot, so that he can start and stop the motor at will whenbags are emplaced and removed.

The operation is thought to be obvious from the description, but a briefreview may be to advantage. The hopper 5 is filled with screened clay. Abag 22, of which a supply will be kept at hand, is slipped over thenozzle I9 and held in place by one of the hands of the operator. Themotor 32 is started by stepping on the treadle 36. The auger 23 feedsthe clay into the bag which gradually slips off of the nozzle (arrow aFig. 1), as it is filled. When the bag comes off the operator has onlyto crimp the end and if he is quick enough he can slip the next bag onwithout stopping the motor. However, the treadle switch 35 is providedfor the purpose of stopping and starting the motor as may be needed andwhen the next bag is slipped on the operation is simply a repetition ofthat which has already been stated.

I claim: I

1. A bag filling machine comprising a hopper which has a tubularterminal and an axially, alined shaft opening, the end of the terminalbeing extended beyond the front limit of the hopper, a nozzle, incontinuation of said extension, means 'fconstituting a partial supportfor the hopper and at the same time clamping the extension and nozzletogether, a drive shaft entering the hopper through said opening andfitting said opening fairly closely, an auger situated in the hopper,tubular terminal and nozzle, and coupling means connecting the auger anddrive shaft, being readily disconnectible upon loosening the clampingmeans, removing the nozzle and pulling the auger out of the tubularextension.

2. In a bag filling machine, a hopper having a tubular terminal whichincludes an extension, supporting means for the hopper including asupport on which said extension is rested and which has a cap that bearson the extension, a nozzle which is secured into the assembled supportand cap, the tightening down of the cap clamping the screw threads sothat the nozzle will not come loose, and an auger operating in thetubular ex- K tension and nozzle for conveying the material from thehopper to the outlet end of the nozzle.

HARRY S. GAY.

